PLC, HMI, Modbus device

ericteuh

Member
Join Date
Mar 2014
Location
Atascadero, CA
Posts
2
Hi,
I am new to the world of PLC, my knowledge is limited but I am smart and can learn easylly. Also I am French, mean my english is not to bad. LOL


the set: one do-more DL205 PLC, one C-more EA7 HMI, both connected to ethernet (no comm problem)

To the PLC is connected a device (flame detector) through a RS485 with modbus protocole (no comm problem)

On the HMI I design a button to read the output of the flame detector and display the value on the digital display (work fine)

My deal is, I want use a line trend graph on the HMI to display the value from the flame detector. I did and use the reading button previously programmed then got the values on my graph.

How can I programm the HMI to read automatically the valur of the flame without human interaction ?

See the snapshots bellow, in RED is the adresses using on the HMI for interacting with the PLC

THX
https://drive.google.com/file/d/0B6A0fRbKEBT9X3dwX2VlajNVZTQ/edit?usp=sharing

https://drive.google.com/file/d/0B6A0fRbKEBT9VWtVUnhPR2JSb2s/edit?usp=sharing

https://drive.google.com/file/d/0B6A0fRbKEBT9OS1rX0ozQUo0Qnc/edit?usp=sharing
 
Last edited:

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